In the Watson-Crick Model of DNA Structure, the Polynucleotide Chains

question 19

Multiple Choice

In the Watson-Crick model of DNA structure, the polynucleotide chains are

• A) of unequal length.
• B) both oriented in the same direction.
• C) arranged with the bases on the outside.
• D) built with the nucleotides as the backbone.
• E) oriented in opposite directions.

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Definitions:

Coverslip

A thin piece of glass or plastic used to cover specimens on a microscope slide, protecting the sample and lens.

Eyepiece

The lens or group of lenses at the viewing end of a telescope or microscope, through which the observer looks to see the magnified image.

Magnification

The process of enlarging the appearance of an object, typically using lenses or microscopes.

Parfocal Microscope

A microscope designed such that once an object is in focus at one magnification, it remains in focus when the magnification is changed.